Plants of the Four Corners

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  Plantae

      Tracheophyta

            Magnoliopsida

                    Rosales

                            Rhamnaceae

                                     Adolphia

                                             Adolphia californica

                                             Adolphia infesta

                                     Auerodendron

                                             Auerodendron pauciflorum

                                     Ceanothus

                                             Ceanothus americanus

                                             Ceanothus cordulatus

                                             Ceanothus cuneatus

                                             Ceanothus fendleri

                                                   [Ceanothus fendleri var. venosus]

                                                   [Ceanothus fendleri var. viridis]

                                                   [Ceanothus subsericeus]

                                             Ceanothus ferrisiae

                                             Ceanothus herbaceus

                                                   [Ceanothus ovalis]

                                                   [Ceanothus ovatus]

                                                   [Ceanothus pubescens]

                                             Ceanothus integerrimus

                                                   [Ceanothus integerrimus var. californicus]

                                                   [Ceanothus mogollonicus]

                                                   [Ceanothus myrianthus]

                                             Ceanothus martini

                                             Ceanothus ophiochilus

                                             Ceanothus pauciflorus

                                                   [Ceanothus greggii subsp. vestitus]

                                                   [Ceanothus greggii var. franklinii]

                                                   [Ceanothus greggii var. vestitus]

                                                   [Ceanothus greggii]

                                                   [Ceanothus vestitus]

                                             Ceanothus pendletonensis

                                             Ceanothus perplexans

                                                   [Ceanothus greggii subsp. perplexans]

                                                   [Ceanothus greggii var. perplexans]

                                             Ceanothus pinetorum

                                             Ceanothus roderickii

                                             Ceanothus sanguineus

                                             Ceanothus tomentosus

                                                   [Ceanothus azureus]

                                             Ceanothus velutinus

                                               Ceanothus velutinus var. laevigatus

                                                     [Ceanothus laevigatus]

                                     Colubrina

                                             Colubrina californica

                                                   [Colubrina texensis var. californica]

                                             Colubrina oppositifolia

                                     Conalma

                                             Conalma mexicana

                                                   [Condalia mexicana]

                                     Condalia

                                           [Microrhamnus]

                                             Condalia correllii

                                             Condalia ericoides

                                                   [Microrhamnus ericoides]

                                             Condalia globosa

                                               Condalia globosa subsp. pubescens

                                                     [Condalia globosa var. pubescens]

                                             Condalia hookeri

                                             Condalia kearneyana

                                                   [Condalia warnockii var. kearneyana]

                                             Condalia spathulata

                                             Condalia viridis

                                             Condalia warnockii

                                     Condaliopsis

                                             Condaliopsis divaricata

                                                   [Condalia divaricata]

                                                   [Ziziphus divaricata]

                                                   [Ziziphus obtusifolia var. canescens]

                                             Condaliopsis obtusifolia

                                                   [Condalia lycioides]

                                                   [Sarcomphalus obtusifolius]

                                                   [Ziziphus lycioides]

                                                   [Ziziphus obtusifolia]

                                     Cryptandra

                                     Endotropis

                                           [Ventia]

                                             Endotropis alnifolia

                                                   [Frangula americana]

                                                   [Rhamnus alnifolia]

                                             Endotropis crocea

                                               Endotropis crocea subsp. crocea

                                                     [Rhamnus crocea]

                                               Endotropis crocea subsp. ilicifolia

                                                     [Rhamnus crocea subsp. ilicifolia]

                                                     [Rhamnus crocea var. ilicifolia]

                                                     [Rhamnus ilicifolia]

                                               Endotropis crocea subsp. pilosa

                                                     [Rhamnus crocea subsp. pilosa]

                                                     [Rhamnus crocea var. pilosa]

                                                     [Rhamnus pilosa]

                                             Endotropis lanceolata

                                               Endotropis lanceolata subsp. lanceolata

                                                     [Rhamnus lanceolata]

                                             Endotropis serrata

                                                   [Rhamnus fasciculata]

                                                   [Rhamnus serrata]

                                                   [Rhamnus smithii subsp. fasciculata]

                                                   [Ventia serrata]

                                             Endotropis smithii

                                                   [Rhamnus smithii]

                                                   [Ventia smithii]

                                     Frangula

                                             Frangula alnus

                                               Frangula alnus subsp. alnus

                                                     [Frangula alnus var. asplenifolia]

                                                     [Rhamnus frangula]

                                             Frangula betulifolia

                                                   [Rhamnus betulifolia]

                                             Frangula californica

                                               Frangula californica subsp. californica

                                                     [Rhamnus californica var. betulifolia]

                                                     [Rhamnus californica]

                                               Frangula californica subsp. tomentella

                                                     [Rhamnus californica var. tomentella]

                                                     [Rhamnus tomentella]

                                               Frangula californica subsp. ursina

                                                     [Frangula ursina]

                                                     [Rhamnus californica subsp. ursina]

                                                     [Rhamnus californica var. ursina]

                                                     [Rhamnus tomentella subsp. ursina]

                                                     [Rhamnus ursina]

                                             Frangula caroliniana

                                                   [Rhamnus caroliniana]

                                             Frangula obovata

                                                   [Frangula betulifolia subsp. obovata]

                                                   [Rhamnus betulifolia var. obovata]

                                             Frangula purshiana

                                               Frangula purshiana subsp. purshiana

                                                     [Rhamnus purshiana]

                                     Gouania

                                             Gouania hillebrandii

                                             Gouania meyenii

                                             Gouania vitifolia

                                     Karwinskia

                                             Karwinskia humboldtiana

                                                   [Karwinskia glandulosa]

                                     Phylica

                                             Phylica oleifolia

                                     Pseudoziziphus

                                             Pseudoziziphus celata

                                                   [Ziziphus celata]

                                     Rhamnus

                                             Rhamnus cathartica

                                     Sageretia

                                             Sageretia wrightii

                                     Sarcomphalus

                                     Ziziphus

                                             Ziziphus jujuba

                                                   [Ziziphus zizyphus]

                                             Ziziphus mauritiana

                                             Ziziphus mucronata